Sky, space and flight trackers
Interactive visualizers and alert apps that show what is overhead — stars, planets, satellites, rocket launches, aircraft and ships — via 3D maps, AR, terminals and stargazing planners for space and aviation enthusiasts.
Built for: Stargazers, space and aviation hobbyists
Projects since May 04
109
Different builders
105
Last 4 weeks vs 8 before
+19%
AI is the core
0.9%
Projects per week
Mostly web app (60%), mobile app (24%), game (4.6%) · from r/SideProject, r/vibecoding, r/IMadeThis, r/ShowYourApp
Latest
- SolarSystem.city — Guides people on walking tours that lay out the solar system to scale across real city landmarks, with AR models of each planet.“SolarSystem.city a Space Themed Walking City Tour”
- Points a phone toward the real 3D direction of a chosen celestial body or Earth location, showing distance, light travel time, and haptic feedback.“I’ve had a dream about a compass for space travel and I built it overnight.”
- Moons Away — Calculates how many lunar cycles away a chosen date is and shows the moon's phase for that day.“I made an app that tells you how many moons away something is”
- quadmath — Estimates flight time, thrust-to-weight and all-up weight for tiny FPV whoop drones and analyzes Betaflight blackbox logs in the browser.“I built a free build calculator, blackbox analyzer and browser sim for tiny FPV drones, with flight times anchored to builds I actually weighed and timed”
- Here and Above — Shows nearby aircraft, vessels, and transit vehicles in a 3D view of the sky and surroundings, including the moon, planets, and sun.“I went down a rabbit hole building a 3D view of the planes over my house”
- nextpass.space — Predicts satellite passes over the user's location from CelesTrak TLEs, showing azimuth, elevation, range and sunlit status.“I built a free satellite pass predictor (Orekit, cross-checked against Skyfield). What would make it useful to you?”
- A Moment in the Cosmos — Shows one daily high-resolution space photograph from Hubble, Webb, ESO or NOIRLab with object data, scale, location, and guided feature tours.“A Moment in the Cosmos: A daily portal to the universe: one spectacular high-resolution image of space every day, with the story, location, object data, and more!”
- Sky of Your Day — Generates a poster of the real night sky for any chosen date and location.“A friend couldn't find a star map poster he liked for his girlfriend, so I built one.”
- GrandTotality — Provides information about the total solar eclipse of the century for viewers planning to watch it.“I made a website for the Eclipse of the Century - GrandTotality.com”
- Perigee — Shows active satellites, lunar and Mars orbiters, and interplanetary probes in real time in a browser-based 3D viewer computed from public orbital data.“Perigee: Every active satellite, lunar orbiter, Mars orbiter and interplanetary probe, in real time in your browser”
- WhatTheStar — Shows an interactive star map of the night sky with narrated lessons on constellations and how the sky changes through the seasons.“I made an interactive star map where you can explore tonight's night sky and learn to read the constellations”
- Utkik — Shows live planes and ships on an Apple TV screen and displays info cards about the places flights are arriving from.“My Apple TV app Utkik got popular, so I built its first add-on: 500+ destinations, 9,000+ info cards”
- Ephemora — Scores night-sky photography conditions for stars, the Milky Way, the moon and meteors, showing current conditions and better upcoming windows.“I kept missing good night-photography conditions, so I built an app to make them easier to understand”
- kuzipilot — Aggregates aviation and history news, generates AI briefings and quizzes, and offers a chatbot, mini-games, weather radar and an airbase map.“My CS50X final project grew into a full AI-powered aviation & history portal — would love feedback!”
- UFO Radar & Sky Tracker — Runs in the browser to log night sky sightings with an auto-sensor, event log, night vision mode, and video recording.“Built a free browser-based UFO Radar & Sky Tracker (Open Source, no ads)”
- Astro: Space Explorer — Tracks satellites in real time, shows space news and upcoming missions, and simulates rocket launches with 3D spacecraft models.“Astro: Space Explorer”
- Almost Nowhere — Lets players attempt a space journey that shows the realistic scale of distances between stellar objects and some relativistic effects.“I made a small educational game about space travel.”
- Sky Almanac — Shows upcoming astronomical events with local visibility, approximate altitude and best viewing time.“I built a free, location-aware astronomy calendar that tells you what’s actually worth seeing”
- Cenit — Simulates an open sky with sun and moon orbits, eclipses, meteor showers, and wildlife to spot and record.“Cenit — A contemplative sky simulation & discovery web app built with Three.js and TypeScript”
- satchaser — Simulates working in a space agency's mission control, with tickets, satellite emergency queues, spacecraft checks, timesheets, and a live satellite tracker.“I built a "nasa" simulator.”
Most discussed
- micro-radar — Shows live information about flights currently flying overhead on a small desk display.“I made a tiny open-source flight radar for your desk”
- Galaxium — Renders a 3D interactive simulation of the solar system, Milky Way and wider universe with real star and galaxy positions.“Galaxium - a 3d universe exploration simulator”
- Tesq — Renders a interactive 3D scene of Earth, Moon and Sun that follows real lunar phases, local time and planetary gravity, with a draggable cube.“I used Claude Code to build a website with real lunar phases, local-time synchronization, and planetary gravity”
- Satlas — Renders live 3D positions of tracked Earth-orbit objects from TLE data and lets users filter, inspect, and predict satellite passes.“I built a real-time 3D globe that tracks every object in Earth's orbit (31k+ satellites and debris) (Co-author: Claude)”
- eclipsewhere — Computes totality duration, local start and end times, sun altitude, and August cloud odds for any clicked point on the 2027 solar eclipse path.“Click anywhere on the 2027 eclipse path and it computes your exact totality duration from NASA's Besselian elements”
- Shows the moon phase for each day and suggests which activities suit each day.“I'm trying to create an app for moon phases and what is beneficial to do on which day. I would need some volunteers to test it and give feed back 😅”
- Stellata — Renders a browser-based 3D model of the real universe with real star catalogue positions, live planetary orbits, and 3D dust extinction from the viewer's position.“Solo-built a physically-accurate 3D model of the universe (330k real stars, live orbits, planets, moons, and real dust)”
- Simulates flying an aircraft in the browser with volumetric clouds.“Browser-based flight sim with volumetric clouds”
- Almost Nowhere — Lets players attempt a space journey that shows the realistic scale of distances between stellar objects and some relativistic effects.“I made a small educational game about space travel.”
- sunrisewhen — Generates custom printable wall posters showing a city's solar data for a chosen year, with selectable colors and fonts.“I built a tool that turns any city's astronomy data into a custom wall poster”